Comparison of thermal neutron and hard X-ray dark-field tomography
Gustschin A, Neuwirth T, Backs A, Viermetz M, Gustschin N, Schulz M, Pfeiffer F (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 7
Article Number: 1
Journal Issue: 1
Abstract
High visibility (0.56) neutron-based multi-modal imaging with a Talbot–Lau interferometer at a wavelength of 1.6 Å is reported. A tomography scan of a strongly absorbing quartz geode sample was performed with both the neutron and an X-ray grating interferometer (70 kVp) for a quantitative comparison. Small scattering structures embedded in the absorbing silica matrix were well resolved in neutron dark-field CT slices with a spatial resolution of about 300 µm. Beneficial effects, such as monochromaticity and stronger penetration power of the used neutron radiation, helped to avoid the beam hardening-related artificial dark-field signal which was present in the X-ray data. Both dark-field modalities show mostly the same structures; however, some scattering features appear only in the neutron domain. Potential applications of combined X-ray and neutron multi-modal CT enabling one to probe both the nuclear and the electron density-related structural properties are discussed. strongly absorbing samples are now accessible for the dark-field modality by the use of thermal neutrons.
Involved external institutions
Germany (DE)How to cite
APA:
Gustschin, A., Neuwirth, T., Backs, A., Viermetz, M., Gustschin, N., Schulz, M., & Pfeiffer, F. (2021). Comparison of thermal neutron and hard X-ray dark-field tomography. Journal of Imaging, 7(1). https://doi.org/10.3390/jimaging7010001
MLA:
Gustschin, Alex, et al. "Comparison of thermal neutron and hard X-ray dark-field tomography." Journal of Imaging 7.1 (2021).
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